Version 2.1 is not available
Download the latest version from Software Informer
Checked for viruses on May 29, 2023.
The file is clean, see the report.
Version: 2.2.40.1 (x86)
Date update: Apr 11, 2024
File name: gns3-2.2.29-all-in-one.exe
Size: 93 MB